(spoiler alert) can I bet? cuz I am betting they are the one who shot vexx and considering they zovack second in command then they probably shot vexx for betrayl maybe? but then again how tf did they get to orion so fast? maybe they were already there but for what reason?? so manyyy questionss
plus I might just throw a theory in, maybe after vexx was taken by the crew, the unit that was supposedly following vexx's order to follow the ship knew that he was taken and reported back to zovack or whatever so when vexx and the others were waiting for permission to land on orion, mez the baldie either reported that vexx is on the ship or maybe when he was just asking for permission to let them land somebody else (who works for zovack) was there or just somehow learned that vexx was there and sent people after him and that's how wren ended up there?
anyways all the best of luck to you on the next chapter! can't wait to see it :D